Paper I · 7 Sustainable Development & Environment · 7.2.2 Solid and hazardous waste management

7.2.2.6 Wastewater: sewage treatment, faecal sludge and reuse

Sewage is cleaned in stages, physically then biologically then by polishing, and the sludge from septic tanks must also be emptied and treated; India treats only part of the sewage it generates, so reuse and decentralised treatment matter.

  • APPSC Paper I · Paper I
  • Standard level
  • 7 min read
  • Full course

Key terms

  • sewage treatment plant
  • primary secondary tertiary treatment
  • activated sludge
  • BOD
  • faecal sludge and septage management
  • constructed wetland
  • East Kolkata Wetlands
  • Phytorid
  • treated water reuse
  • ODF++

What this note covers

  1. Core factsFoundation
  2. ExplainedStandard
  3. DeeperAdvanced
  4. Mains writingMains writing
  5. Common trapsFoundation
  6. Quick revisionFoundation

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